Method and system for testing quantum efficiency index of solar cell
A solar cell and quantum efficiency technology, applied in the monitoring of photovoltaic systems, photovoltaic power generation, electrical components, etc., can solve the problems of slow measurement speed, expensive cost, and complex structure, and achieve the effect of improving accuracy and efficiency
Active Publication Date: 2019-10-11
INST OF PHYSICS - CHINESE ACAD OF SCI
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Both of these two test methods require a built-in monophotometer for measurement, which is not only slow in measurement speed, but also complex in structure and expensive in cost
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[0057] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.
[0058] In order to solve the above technical problems, an embodiment of the present invention proposes a method for testing the quantum efficiency index of a solar cell. figure 1 A flowchart showing a method for testing the quantum efficiency index of a solar cell according to an embodiment of the present invention. see figure 1 , the method may at least include the following steps S102 to S106.
[0059] Step S102 , applying a bi...
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The invention provides a method and a system for testing a quantum efficiency index of a solar cell. The method comprises the steps of: applying a bias voltage to the solar cell to be tested, and simultaneously performing perturbation pumping on the solar cell to be tested by using pulse pumping light; adjusting the sampling resistance to obtain a transient photocurrent attenuation curve and / or antransient photovoltage attenuation curve of the solar cell to be tested under different bias voltages; and performing calculation based on the transient photocurrent attenuation curve and / or the transient photovoltage attenuation curve of the solar cell to be tested to obtain the quantum efficiency index of the solar cell to be tested. The quantum efficiency index comprises at least one of internal quantum efficiency, charge collection efficiency and charge extraction efficiency. Through pulse laser with adjustable wavelength and intensity and external electric field control, adjustable transient photocurrent / photovoltage characterization of the solar cell is carried out, then the quantum efficiency index of the solar cell is calculated, the universality is good, and the test system has asimple and compact structure, rich characterization functions and high test accuracy.
Description
technical field [0001] The invention relates to the technical field of application and testing of semiconductor materials, in particular to a method and system for testing the quantum efficiency index of a solar cell. Background technique [0002] The world's energy consumption is increasing day by day, and non-renewable fossil energy is the main source. Fossil fuels will eventually be exhausted, and the resulting energy problem is a major issue facing human society today. As the energy with the most abundant reserves in the world, solar energy will play an irreplaceable role in the future economic development process. Solar cells are the key devices to realize the conversion and application of solar energy, and their research and application have received extensive attention and support from all over the world. Inorganic heterojunction cells such as crystalline silicon and thin film, and new solar cells such as organic, sensitized and organic-inorganic hybrids have been d...
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IPC IPC(8): H02S50/15
CPCH02S50/15Y02E10/50
Inventor 李一明石将建吴炯桦孟庆波
Owner INST OF PHYSICS - CHINESE ACAD OF SCI